They were supposed to drain off water.

应该是排水用的。

youdao

Should fully utilize activation of fly ash in this project, adopting the corresponding measure to strengthen. and drain off water …

此项施工中应充分利用粉煤灰的活性、在最佳含水量下压实及采用相应措施加强排水。

youdao

By adjusting main drain off water pump flow quantity, this paper makes main drain off water equip running safe, economy, saving investment.

通过调整矿井主排水泵流量，使矿井主排水设备安全经济运行，节约投。

youdao

Their purpose is to drain off rain water properly and to cool and show off the huge engine.

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Cold water and sulphuric acid next, drain off the gasoline, that leaves a paste, boil the paste, add a reactive.

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Dumping them in, she stirs them for a bit, turns the heat down, goes back to the sink to turn off the water, and lets the lettuce sit in the sink to drain.

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